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igomit [66]
3 years ago
10

What is 1 Plus 1? pls help i need it now asap

Mathematics
2 answers:
OLga [1]3 years ago
6 0

Answer:

2

Step-by-step explanation:

statuscvo [17]3 years ago
3 0

Answer:

2

Step-by-step explanation:

add

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In a population of 210 women, the heights of the women are normally distributed with a mean of 64.4 inches and a standard deviat
antoniya [11.8K]
Part A:

Given that i<span>n a population of 210 women, the heights of the women are normally distributed with a mean of 64.4 inches and a standard deviation of 2.9 inches.

If 36 women are selected at random, the mean of the sample is estimated by the mean of the population.

Thefore, the mean is given by: \mu_{\bar{x}}=64.4 \ inches



Part B:

The standard deviation using the finite population factor is given by:

\sigma_{\bar{x}}= \frac{\sigma}{\sqrt{n}} \cdot \sqrt{\frac{N-n}{N-1} } \\  \\ = \frac{2.9}{\sqrt{36}} \cdot \sqrt{\frac{210-36}{210-1} } =\frac{2.9}{6} \cdot \sqrt{\frac{174}{209} } \\  \\ =0.4833(\sqrt{0.8325}) =0.4833(0.9124) \\  \\ =0.44</span>
8 0
3 years ago
Rewrite with only sin x and cos x. sin 3x - cos x
vova2212 [387]

Answer:

sin(3x) = sin(x + 2x)

= sinx cos(2x) + cosx sin(2x)

= sinx [1 - 2sin2x] + cosx [2sinxcosx]

= sinx - 2sin3x + 2cos2xsinx

7 0
3 years ago
Sarah multiplied 4.16 and 1.83, as shown. But she forgot to put a decimal point in the answer. Complete the sentence below.
Gre4nikov [31]
Answer: The correct answer should be 7.6128

If you do the problem correctly, you will get an answer of 7.6128. This is because there are 4 decimals places in the numbers that are being multiplied. This means that there will be 4 decimal places in the answer. If you have her work, we can find the mistake. It is probably that she counted the wrong number of places.
8 0
4 years ago
Read 2 more answers
Margie and four of her friends are eating lunch at a restaurant. The total bill is $52.50 before tax and tip.
musickatia [10]
Part A- DISCOUNT-SALES TAX--- 42.5
WITH TAX-- 45.05

part b- the tip is... 10.5

part c- 11.11
4 0
3 years ago
Carly went to walk her dog at 11:45 a.m. and got back home at 12:30 p.m. How long<br> was her walk
erik [133]

Answer:

45 minutes

Step-by-step explanation:

7 0
3 years ago
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